21
Maintaining the Boiler
Inspecting the Ignition and Flame
Detector Electrodes
1. Remove the ignition and flame detector
electrodes from the boiler heat exchanger.
2. Remove any deposits accumulated on the
ignition/flame detector electrode. If the
electrodes cannot be cleaned satisfactorily,
replace with new ones.
3. Replace ignition/flame detector electrode,
making sure gasket is in good condition and
correctly positioned.
Checking the Ignition Ground Wiring
1. Check that the ground wire is in good condition
and securely attached to the boiler casing.
2. Check ground continuity of wiring using
continuity meter.
3. Replace ground wires if ground continuity is not
satisfactory.
Checking all Boiler Wiring
Inspect all boiler wiring, making sure wires are in
good condition and securely attached.
Checking the Control Settings
1. From the front panel, enter the State Data
Information mode and check all settings. Adjust
settings if necessary.
2. Check settings of external limit controls (if any)
and adjust if necessary.
Performing Start-up and Checks
1. Start boiler and make sure that the boiler is
operating properly.
2. Verify cold fill pressure is correct and that
operating pressure does not go too high.
Note
Safety relief valves should be inspected
at least once every three years
, by
a licensed plumbing contractor or
authorized inspection agency, to ensure
that the product has not been affected
by corrosive water conditions and to
ensure that the valve and discharge line
have not been altered or tampered with
illegally.
WARNING
●
Certain naturally occurring conditions may
corrode the valve or its components over
time, rendering the valve inoperative. Such
conditions are not detectable unless the
valve and its components are physically
removed and inspected. This inspection
must only be conducted by a plumbing
contractor or authorized inspection agency
– not by the owner. Failure to re-inspect the
boiler relief valve as directed could result in
unsafe pressure buildup, which can result in
severe personal injury, death, or substantial
property damage.
●
Following installation, the valve lever must
be operated
at least once a year
to ensure
that waterways are clear. Certain naturally
occurring mineral deposits may adhere to
the valve, rendering it inoperative. When
manually operating the lever, water will
discharge and precautions must be taken to
avoid contact with hot water and to avoid
water damage.
●
Before operating lever, check to see that
a discharge line is connected to this valve
directing the flow of hot water from the
valve to a proper place of disposal. Otherwise
severe personal injury may result. If no
water flows, valve is inoperative. Shut down
the boiler until a new relief valve has been
installed.
2. After following the above warning directions, if
the relief valve weeps or will not seat properly,
replace the relief valve. Ensure that the reason
for relief valve weeping is the valve and not
over-pressurization of the system due to
expansion tank waterlogging or undersizing.
Summary of Contents for NCB-190/060H
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